Ball-caster.



S. WASZKIEWICZJ BALL CASTER.

APPLICATION FILED JAN. 29. 1918.

1 ,27 9,048. Patented Sept. 17; 1918.

INVENTOR ATTORNEY ESTATES PATENTOFFICE.

STANLEY WASZKIEWIGZ, or PASSAIC, NEW. JERSEY.

BALL-CASHIER.

Specification of Letters Patent. Pat nted Sept. 17, 1918.

Application filed January 29, 1918. Serial No. 214,279.

cation.

This invention relates to improvements in casters as used on various articles of furnlture and particularly to types in which a' ball is used as a contact element.

The principal object of the invention is to provide a ball caster in which the ball or contact element may be adjusted within its container so as to avoid lost motion. A further object is to provide casters in forms which are easily and cheaply constructed, and readily'applied at any desired time to various articles of furniture.

These and other like objects are attained by the novel construction and combination of parts hereinafter described and shown in the accompanying drawing, forming a ma terial part of this a disclosure, and in which Y Figure 1 is a side elevational view showing the lower portion of an article of furniture and indicating the application of the invention.

Fig. 2 is a vertical sectional view taken on line 22 of Fig. 1, and

Fig. 3 is a plan view showing the caster.

In the drawing, the numeral 10, represents the lower portion or leg of an article of furniture, here shown to have a beveled end 11, of rectangular cross-section, the same having a flat, level termination.

Secured upon the extreme lower end is a rectangular plate 15, having a central circular opening 16, through which projects an upwardly extending cone 18, having at its lower end an out-turned flange 19, which makes contact with the outer surface of the plate 15, while the upper inner end of the cone is formed with a flat in-turned flange 20, the central portion of which is pressed down forming a thimble 21, interiorly screw-threaded, and has fitted to it a tubular sleeve 23, with an exterior thread the lower end 24, of which is suited to make contact with the ball or sphere 25, so as to press the 7 same downwardly.

The sleeve 23' is provided with an enlarged annular head 26, which "may be knurled or otherwise corrugated, so that the tubular sleeve 23 may be readily turned.

The sphere is held in position by a curved seat plate 28, containing an opening 29, suited to the ball 25, which extends partially therethrough, so as to make contact with the surface uponwhich the article rests, the plate being held in position by reason of extending corner projections 30, which are secured to the articles by'screws or nails 31,

readily driven into place so as to hold the whole caster structure rigidly engaged with the foot of the article as will be readily understood.

In operation, the parts having been assembled, as best shown in Fig. 2, and the tubular sleeve 23 adjusted so as to permit the ball '25, to move freely and yet not pass out of the seat, the caster is 'applied 'in an obvious manner, it being readily possible to remove the plates, readjust the tubular sleeve, and replace the caster.

Having thus described my invention what I I claim as new and'desire to secure by Letters Patent, is a 1. A ball caster comprising a conical casing adapted to engage with the article to be moved, an interiorly threaded sleeve engaged with said casing, a screw fitted to said sleeve, a ball against which said screw is adapted to impinge, a seat receptive of said ball, and means for securing said parts in position.

2. A caster comprising a ball, a flanged.

seat therefor, said seat having an opening through which a portion of said ball extends, a hollow conical element engaged with said seat, an inverted sleeve formed in the upper part of said conical element, a screw threaded into said sleeve, the end of said screw being adapted to impinge upon the periphery of said ball, and means for securing said seat in position.

In testimony whereof signature.

STANLEY WASZKIEWICZ.

copies of this patent may be obtained for five cents each, by addressing the "Oommmioner 0! but",

Washington, I). 0.

I have aflixed my 

